Don't have a passkey to set up bluetooth in 5

SOURCE: How do I locate my Bluetooth Passkey? for my bmw 750li

on 750 and 750li 2007
open trunk remove carpet and wheel cover
remove 4 black pin from lock cover
remove 4 pin from left panel
remove silver latche 2 screws
remove the whole entire panel
look at the top you see silver box has sticker and "PK" and then a 4 digit code. those 4 digits following the PK is your bluetooth pin.

SOURCE: Cannot locate bluetooth Passkey on my 2006 BMW

The passcode is your phone passcode.

SOURCE: Bluetooth passkey--'06 530XI--can you find the passkey?

The number was on a white card stuck in with the manual binder. Or if you don't have it, its located in the trunk, behind the left nav access panel on a silver "TCU" module about the size of 2 vhs tapes stacked together. if you look at the eject button on the nav player its located just to the right and is installed on about a 45 degree angle.

there is a white lable with the "PK" on it. i used a small telescoping mirror but you can also slightly pull back the trunk liner above the unit and it will be easily located. If any of this options works go to Bmw dealer for service and we found it in car computer.